Review on 4 75 23V 1 17V DC DC Converter Module by Jermaine Chowdhury

Failed to load media. 10 out of 10 didn't work at all. I even bought some from another site and none of them are regulated. Adjusting the screw does nothing. I've used hundreds of converters with all kinds of potentiometers, but they don't do anything. When 8V input, they output 7V. If you increase the input, the output will increase accordingly. The only thing they can be used for is if you need a 1V step down that does NOT support the set output. rzunimag. I even got some from Aliexpress and eBay but they are all the same. I can't figure out why they even make them!? lol. Buy with blue potentiometer and be gentle.